WO2024257640A1 - 情報処理方法、情報処理装置、及びプログラム - Google Patents
情報処理方法、情報処理装置、及びプログラム Download PDFInfo
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- WO2024257640A1 WO2024257640A1 PCT/JP2024/020249 JP2024020249W WO2024257640A1 WO 2024257640 A1 WO2024257640 A1 WO 2024257640A1 JP 2024020249 W JP2024020249 W JP 2024020249W WO 2024257640 A1 WO2024257640 A1 WO 2024257640A1
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- information
- state
- information processing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
- B63B79/10—Monitoring properties or operating parameters of vessels in operation using sensors, e.g. pressure sensors, strain gauges or accelerometers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
- B63B79/20—Monitoring properties or operating parameters of vessels in operation using models or simulation, e.g. statistical models or stochastic models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
- B63B79/30—Monitoring properties or operating parameters of vessels in operation for diagnosing, testing or predicting the integrity or performance of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/08—Mounting arrangements for vessels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/035—Propane butane, e.g. LPG, GPL
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/033—Small pressure, e.g. for liquefied gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/03—Control means
- F17C2250/032—Control means using computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0469—Constraints, e.g. by gauges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0486—Indicating or measuring characterised by the location
- F17C2250/0491—Parameters measured at or inside the vessel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/011—Improving strength
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/04—Constraint-based CAD
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/06—Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/02—Reliability analysis or reliability optimisation; Failure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
Definitions
- This disclosure relates to an information processing method, an information processing device, and a program.
- Patent Document 1 discloses a state estimation system related to the background art.
- the system is a system for estimating the state of a liquefied gas tank installed on a ship, and includes a measurement unit, a calculation unit, a data assimilation unit, and an evaluation unit.
- the measurement unit includes a measuring instrument that measures the state of the liquefied gas tank related to its strength.
- the calculation unit calculates the state of the liquefied gas tank related to its strength using a pre-analysis model.
- the data assimilation unit updates the pre-analysis model by data assimilation using the measurement results acquired by the measurement unit.
- the evaluation unit evaluates the state of the liquefied gas tank based on the calculation results output from the calculation unit.
- Patent document 1 does not provide any detailed consideration on optimizing the installation location of the measuring device.
- the present disclosure aims to provide an information processing method, information processing device, and program that can optimize the installation location of measuring instruments.
- an information processing device acquires analytical model information for estimating the state of a structure and planning information including installation locations of measuring instruments for measuring physical quantities related to the state of the structure, calculates an index value of the contribution of the installation locations to the accuracy of the state estimation based on the acquired analytical model information and planning information, and outputs result information including the calculated index value.
- An information processing device includes an acquisition unit that acquires analytical model information for estimating the state of a structure and planning information including installation locations of measuring instruments that measure physical quantities related to the state of the structure, a calculation unit that calculates an index value of the degree of contribution that the installation locations have to the accuracy of the state estimation based on the analytical model information and the planning information acquired by the acquisition unit, and an output unit that outputs result information including the index value calculated by the calculation unit.
- a program causes an information processing device to function as: acquisition means for acquiring analytical model information for estimating the state of a structure and planning information including installation locations of measuring instruments for measuring physical quantities related to the state of the structure; calculation means for calculating an index value of the degree of contribution that the installation locations have to the accuracy of the state estimation based on the analytical model information and the planning information acquired by the acquisition means; and output means for outputting result information including the index value calculated by the calculation means.
- FIG. 1 is a diagram showing a liquefied gas storage ship, which is a ship to which the state estimation system is applied.
- FIG. 1 is a diagram illustrating a configuration of a design support apparatus according to an embodiment of the present disclosure.
- 4 is a flowchart showing the flow of processing executed by an information processing unit.
- FIG. 13 is a simplified diagram showing an example of a screen displaying result information.
- FIG. 1 shows a liquefied gas storage ship 3, which is a ship to which a marine liquefied gas tank state estimation system (hereinafter simply referred to as the "state estimation system”) 1 is applied.
- This liquefied gas storage ship 3 is equipped with a hull 5 that floats on the water, and a liquefied gas tank (hereinafter simply referred to as the "tank”) 7 that is installed in the hull 5 and stores liquefied gas.
- the term "liquefied gas storage ship” refers to a ship in general that has the function of storing liquefied gas.
- the liquefied gas storage ship 3 is a liquefied gas carrier ship.
- the liquefied gas storage ship 3 also includes, for example, liquefied gas fuel ships and bunkering ships that supply liquefied gas to other ships.
- Tank 7 is fitted with piping (not shown) for transporting liquefied gas between tank 7 and its exterior, for example, an onshore liquefied gas storage base.
- tank 7 has a dome portion 7a that protrudes upward, and one end of the piping is attached to this dome portion 7a.
- the piping extends from the inside of tank 7 through dome portion 7a to the outside of tank 7.
- the liquefied gas stored in tank 7 may be, for example, liquefied petroleum gas (LPG, approximately -45°C), liquefied ethylene gas (LEG, approximately -100°C), liquefied natural gas (LNG, approximately -160°C), liquefied hydrogen ( LH2 , approximately -250°C), liquefied helium (LHe, approximately -270°C), etc.
- LPG liquefied petroleum gas
- LEG liquefied ethylene gas
- LNG liquefied natural gas
- LH2 liquefied hydrogen
- LHe liquefied helium
- liquefied hydrogen is stored in tank 7.
- two tanks 7 are installed in the hull 5 of the liquefied gas storage ship 3. These two tanks 7 are lined up in the longitudinal direction of the hull 5. However, the number of tanks 7 mounted on the hull 5 may be one, or three or more. Since the configuration of each tank 7 is the same, only one tank 7 will be described in this specification.
- the tank 7 in the illustrated example is an independent tank 7 formed separately from the hull 5.
- This tank 7 has a cylindrical shape with both ends bulging out like a dome.
- the top of the tank 7 is covered by a tank cover 9 that is provided integrally with the hull 5.
- the shape of the tank 7 is not limited to this example, and may be, for example, spherical or rectangular.
- the tank 7 is configured as a double-shell tank 7 having an inner tank 11 and an outer tank 13.
- a vacuum insulation layer is formed between the inner tank 11 and the outer tank 13.
- the configuration of the tank 7 is not limited to this example.
- the tank 7 may be a single-shell tank covered with insulation material.
- the insulation material may be composed of, for example, multiple vacuum insulation panels or multiple foam panels.
- the hull 5 is formed with a recess 15 in which each tank 7 is installed, and this recess 15 is divided into two cells by a bulkhead 17 between the tanks 7.
- a pair of tank support members 21 is disposed on the bottom wall 19 of each cell.
- the pair of tank support members 21 support the tank 7 at positions spaced apart from each other in the axial direction of the tank 7.
- Each tank support member 21 protrudes from the bottom wall 19.
- the tank 7 is installed on the tank support members 21, and is supported in a state spaced apart from each wall that forms the cell of the hull 5. In this embodiment, the tank 7 is attached to the hull 5 with this configuration.
- an inner tank support member 23 that supports the inner tank 11 is arranged between the inner tank 11 and the outer tank 13.
- the inner tank support member 23 is provided on an extension of the tank support member 21.
- the inner tank 11 and the outer tank 13 are connected by this inner tank support member 23.
- the inner tank 11 is supported on the hull 5 via the inner tank support member 23 and the outer tank 13.
- the inner tank support member 23 may be fixed to only one of the inner tank 11 or the outer tank 13 and be provided so as to be in contact with the other, or it may be fixed to both.
- the inner tank support member 23 does not have to be provided on an extension of the tank support member 21, and may be provided at a position offset from the tank support member 21 in the ship's length direction.
- the manner in which the tank 7 is supported relative to the hull 5 is not limited to the example described above, and may be selected as appropriate depending on the structure of the tank 7 and the hull 5.
- a cylindrical tank support member 21 that supports the tank 7 relative to the hull 5 and a cylindrical inner tank support member 23 that is interposed between the inner tank 11 and the outer tank 13 can be used.
- the state estimation system 1 includes a measurement unit 31, a calculation unit 33, a data assimilation unit 35, and an evaluation unit 37.
- the measuring unit 31 is equipped with a measuring instrument 39 that measures physical quantities related to the strength and other conditions of the liquefied gas tank 7, and measures the physical quantities using the measuring instrument 39.
- the "strength and other conditions of the liquefied gas tank 7" measured by the measuring instrument 39 of the measuring unit 31 is, for example, the degree of deformation (distortion) and accumulated fatigue damage of the target part.
- the measuring instrument 39 equipped in the measuring unit 31 is, for example, a strain sensor that measures the degree of distortion as the above-mentioned physical quantity, or a fatigue sensor that measures the amount of cracks required to calculate the accumulated fatigue damage as the above-mentioned physical quantity.
- the measuring instrument 39 may be a sensor that measures only one type of these parameters, or may be multiple types of sensors that measure multiple types.
- the measuring device 39 is attached to a portion that forms a load transfer path LP from the tank 7 to the hull 5 (hereinafter simply referred to as the "load transfer path"). More specifically, in this example, the measuring device 39 is attached to the tank support member 21 and the inner tank support member 23, which are portions that form the load transfer path LP.
- the measuring device 39 is attached, for example, to the tank support member 21 near the portion that contacts the tank 7 and near the portion that is connected to the hull 5.
- the measuring device 39 is attached, for example, to the inner tank support member 23 near the portion that contacts the inner tank 11 and the outer tank 13.
- the data assimilation unit 35 updates the pre-analysis model through data assimilation using the measurement results acquired by the measurement unit 31.
- Data assimilation is a method for statistically correcting uncertain factors in a numerical model using actual measured values.
- the data assimilation unit 35 compares the various conditions and parameters set in the numerical analysis model used by the calculation unit 33 with the measurement results acquired by the measurement unit 31, and if there is a significant difference, updates the pre-analysis model by correcting it using the measurement results.
- the evaluation unit 37 may also be output as a definitive value of accumulated fatigue damage, without using structural reliability analysis.
- the condition estimation system 1 may further include a notification unit 43 that notifies the evaluation results by the evaluation unit 37 in an appropriate manner.
- the notification unit 43 is configured to display a warning to perform repairs or to avoid inclement weather, for example, depending on the degree of fatigue strength deterioration and the probability of fatigue damage occurring within a specified short period of time.
- the tank 7 to which the state estimation system 1 and the state estimation method are applied is not limited to the above example.
- the tank 7 may be a rectangular independent tank, or it may be a so-called membrane type tank that is not independent but is formed integrally with the hull 5.
- it is not limited to the tank 7, and may be any structure.
- FIG. 2 is a diagram showing the configuration of a design support device 50 according to an embodiment of the present disclosure.
- the design support device 50 may be configured as a dedicated terminal, may be configured using a general-purpose computer, or may be configured as a server device. Furthermore, the functions of the design support device 50 may be distributed and implemented in these multiple devices.
- the design support device 50 includes an information processing unit 51, an input unit 52, a memory unit 53, and a display unit 54.
- the display unit 54 is configured using any display device, such as a liquid crystal display or an organic EL display.
- the storage unit 53 is configured using a HDD, SSD, or semiconductor memory, etc.
- the storage unit 53 stores analysis model information 71, plan information 72, and cost information 73. However, the cost information 73 may be omitted.
- the analysis model information 71 is a model for estimating the state of a structure, and in this embodiment corresponds to the above-mentioned pre-analysis model that estimates the state of the strength of the tank 7.
- Plan information 72 includes design information regarding the installation locations and number of installation points of measuring instruments 39.
- Plan information 72 includes multiple pieces of plan information in which at least one of the installation locations and the number of installation points differs. However, information on the number of installation points may be omitted by fixing the number of installation points at each installation location to a predetermined number (e.g., "1").
- Cost information 73 is information relating to the installation costs required to install measuring device 39.
- Cost information 73 includes an item cost DB (database) 81 and a construction cost DB 82.
- the item cost DB 81 is a database showing item costs according to the unit price of measuring device 39, and the item costs vary depending on the type of measuring device 39.
- the construction cost DB 82 is a database showing construction costs such as material costs and labor costs associated with installing measuring device 39, and the construction costs vary depending on the installation location of measuring device 39.
- the information processing unit 51 is configured using a processor such as a CPU.
- the information processing unit 51 has an acquisition unit 61, a calculation unit 62, and an output unit 63 as functions realized by the processor executing a program read from a computer-readable non-volatile recording medium such as a ROM.
- the above program is a program for causing the information processing unit 51, which is an information processing device mounted on the design support device 50, to function as the acquisition unit 61 (acquisition means), the calculation unit 62 (calculation means), and the output unit 63 (output means).
- FIG. 3 is a flowchart showing the flow of processing executed by the information processing unit 51.
- step SP01 the acquisition unit 61 acquires the analysis model information 71, the plan information 72, and the cost information 73 by reading them from the memory unit 53.
- step SP02 the calculation unit 62 calculates an index value of the degree of contribution that the installation location of the measuring instrument 39 makes to the accuracy of state estimation of the analysis model information 71, based on the analysis model information 71 and the plan information 72 acquired by the acquisition unit 61.
- the minimum eigenvalue of the empirical observability Gramian is used as the index value, but this is not limited to this example.
- step SP03 the calculation unit 62 calculates a cost value required to install the measuring device 39 according to the plan information 72, based on the cost information 73 and plan information 72 acquired by the acquisition unit 61.
- step SP03 may be executed before step SP02, or steps SP02 and SP03 may be executed simultaneously.
- the output unit 63 generates and outputs result information including the index value and the cost value calculated by the calculation unit 62.
- the result information output by the output unit 63 is input to the display unit 54.
- the result information is image data of a screen 90 including a graph displaying the correspondence between the plan information 72, the index value, and the cost value, but is not limited to this example.
- calculation unit 62 may calculate a weighted sum of the index value and the cost value using the weighting coefficient as an evaluation value, and the output unit 63 may output the evaluation value, thereby automatically selecting optimal plan information based on the evaluation value.
- FIG. 4 shows a simplified example of a screen 90 that displays result information.
- the upper left area of the screen 90 displays multiple measurement patterns P1 to P3 that correspond to multiple pieces of plan information included in the plan information 72.
- measurement pattern P1 includes three measuring instruments 39 indicated by circles
- measurement pattern P2 includes four measuring instruments 39 indicated by squares
- measurement pattern P3 includes six measuring instruments 39 indicated by crosses.
- the lower left area of the screen 90 displays a contour diagram in which the magnitude of the above-mentioned contribution is color-coded according to the installation location of the measuring device 39.
- the right area of screen 90 displays a graph in which the results of each measurement pattern P1 to P3 are plotted, with the horizontal axis representing cost values and the vertical axis representing contribution index values.
- a straight line L passing through origin O indicates a boundary line that is arbitrarily set by the user. The user can adopt planning information whose results are plotted in the area above line L (measurement pattern P1 in this example), but cannot adopt planning information whose results are plotted in the area below line L (measurement patterns P2 and P3 in this example).
- x t is a state vector, which represents the state (such as nodal displacements or stresses) at a certain time t.
- f(.) is a simulation model, for example an analytical model using FEM (Finite Element Method).
- v t is the system noise, a vector representing the uncertainty of the simulation.
- y t is an observation vector, which represents a vector obtained by extracting the observation value from x t .
- H is an observation matrix, which is a matrix for extracting an observation value from xt .
- the installation location of the measuring instrument 39 in each piece of plan information is given by the observation matrix H.
- wt is the observation noise, which represents the uncertainty of the observation.
- equation (1) can be expressed as a linear combination of equation (3).
- observability Gram matrix G 0 in formula (4) is regular, it can be determined that state estimation is possible, and the merits and demerits of the measurement points can be evaluated depending on the magnitude of the eigenvalues of the observability Gram matrix G 0.
- ⁇ represents an integral variable.
- observability means an index for determining whether the state can be estimated from the measured value in the system.
- the empirical observability Gram matrix G 0 ′ shown in formula (5) is used, and, for example, its minimum eigenvalue is used as an index value indicating the contribution to the state estimation accuracy.
- the index value the minimum eigenvalue, maximum eigenvalue, trace, or average value thereof of the empirical observability Gram matrix G 0 ′ can be used, and may be arbitrarily selected by a user, a service provider, or the like.
- Equation (5) Y k in equation (5) is given by equation (6), where k is the time step.
- n the number of perturbations defined by the user. Perturbations are described later.
- Equation (7) which indicates the difference of the observation vector y when a small perturbation ⁇ u n is added to the initial value x 0 .
- ⁇ is the norm of the perturbation ⁇ u n and is given by equation (8).
- the calculation unit 62 calculates the index value using a function formula, but as a modified example, the calculation unit 62 may calculate the index value using a trained model based on machine learning, a lookup table, or the like.
- a variance-covariance matrix S in equation (10) is defined for a snapshot matrix X in equation (9) in which state vectors xt of the simulation are arranged so as to evolve over time in the column direction.
- eigenvalue decomposition (principal component analysis) of the variance-covariance matrix S is performed to obtain eigenvalues and eigenvectors.
- singular value decomposition is actually performed under the condition of formula (11), and each value of the diagonal matrix D2 in formula (12) is set as an eigenvalue, and each column of U is set as an eigenvector.
- the obtained eigenvalues are sorted in descending order.
- the number c of eigenvalues to be used is arbitrarily determined, and the eigenvectors corresponding to the eigenvalues are perturbed ⁇ u n (1 ⁇ n ⁇ c).
- each element including the information processing unit 51, disclosed in this disclosure can be performed using circuits or processing circuits, including general-purpose processors, dedicated processors, integrated circuits, ASICs (Application Specific Integrated Circuits), conventional circuits, and/or combinations thereof, configured or programmed to perform the disclosed functions.
- a processor is considered a processing circuit or circuit because it includes transistors and other circuits.
- a circuit, unit, or means is hardware that performs the recited functions or hardware that is programmed to perform the recited functions.
- the hardware may be hardware disclosed herein or other known hardware that is programmed or configured to perform the recited functions.
- the hardware is a processor, which is considered a type of circuit
- the circuit, means, or unit is a combination of hardware and software, and the software is used to configure the hardware and/or the processor.
- the design support device 50 calculates an index value of the contribution that the installation location of the measuring device 39 has to the accuracy of the state estimation of the tank 7, and outputs result information including the calculated index value, making it possible to optimize the installation location of the measuring device 39 according to the accuracy of the state estimation.
- the planning information 72 includes the number of measuring instruments 39 to be installed, it becomes possible to optimize the number of measuring instruments 39 to be installed depending on the accuracy of the state estimation.
- the cost information 73 includes the item cost DB 81 and the construction cost DB 82, it is possible to calculate appropriate installation costs.
- the result information is image data of a screen 90 including a graph showing the correspondence between the plan information 72 and the index value, it is possible to present the correspondence between the plan information 72 and the index value to the user in an easy-to-understand manner.
- the structure is a liquefied gas tank installed on a ship, it is possible to estimate the state of the liquefied gas tank installed on the ship using a highly accurate analytical model.
- an information processing device acquires analytical model information for estimating the state of a structure and planning information including installation locations of measuring instruments for measuring physical quantities related to the state of the structure, calculates an index value of the contribution of the installation locations to the accuracy of the state estimation based on the acquired analytical model information and planning information, and outputs result information including the calculated index value.
- the first aspect by calculating an index value of the contribution that the installation location of the measuring instrument has to the accuracy of the state estimation of the structure, and outputting result information including the calculated index value, it is possible to optimize the installation location of the measuring instrument according to the accuracy of the state estimation.
- the planning information may further include the number of measuring devices to be installed.
- cost information relating to the installation cost required to install the measuring device is further acquired, and a cost value required to install the measuring device according to the planning information is further calculated based on the cost information and the planning information, and the result information may further include the calculated cost value.
- the third aspect it is further possible to optimize the installation location of the measuring device according to the installation cost of the measuring device.
- the installation cost may include an item cost according to the unit price of the measuring device and a construction cost according to the installation location.
- the result information may include a graph that displays the correspondence between the plan information and the index value.
- An information processing device includes an acquisition unit that acquires analytical model information for estimating a state of a structure and planning information including installation locations of measuring instruments that measure physical quantities related to a state of the structure, a calculation unit that calculates an index value of a contribution of the installation locations to an accuracy of the state estimation based on the analytical model information and the planning information acquired by the acquisition unit, and an output unit that outputs result information including the index value calculated by the calculation unit. Equipped with.
- the sixth aspect by calculating an index value of the contribution that the installation location of the measuring instrument has to the accuracy of the state estimation of the structure, and outputting result information including the calculated index value, it is possible to optimize the installation location of the measuring instrument according to the accuracy of the state estimation.
- the program according to the seventh aspect of the present disclosure is a program for causing an information processing device to function as: an acquisition means for acquiring analytical model information for estimating the state of a structure and planning information including installation locations of measuring instruments for measuring physical quantities related to the state of the structure; a calculation means for calculating an index value of the contribution of the installation locations to the accuracy of the state estimation based on the analytical model information and the planning information acquired by the acquisition means; and an output means for outputting result information including the index value calculated by the calculation means.
- the seventh aspect by calculating an index value of the contribution that the installation location of the measuring instrument has to the accuracy of the state estimation of the structure, and outputting result information including the calculated index value, it is possible to optimize the installation location of the measuring instrument according to the accuracy of the state estimation.
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Abstract
Description
以上説明した本開示の実施形態をまとめると、以下のとおりである。
を備える。
Claims (7)
- 情報処理装置が、
構造物の状態推定を行う解析モデル情報と、前記構造物の状態に関する物理量を計測する計測器の設置箇所を含む計画情報とを取得し、
取得した前記解析モデル情報と前記計画情報とに基づいて、前記設置箇所が前記状態推定の精度に与える寄与度の指標値を算出し、
算出した前記指標値を含む結果情報を出力する、
情報処理方法。 - 前記計画情報は、前記計測器の設置点数をさらに含む、請求項1に記載の情報処理方法。
- 前記計測器を設置するために必要な設置コストに関するコスト情報をさらに取得し、
前記コスト情報と前記計画情報とに基づいて、前記計画情報に応じて前記計測器を設置するために必要なコスト値をさらに算出し、
前記結果情報は、算出した前記コスト値をさらに含む、請求項1に記載の情報処理方法。 - 前記設置コストは、前記計測器の単価に応じた物品コスト、及び、前記設置箇所に応じた施工コストを含む、請求項3に記載の情報処理方法。
- 前記結果情報は、前記計画情報と前記指標値との対応関係を表示するグラフを含む、請求項1に記載の情報処理方法。
- 構造物の状態推定を行う解析モデル情報と、前記構造物の状態に関する物理量を計測する計測器の設置箇所を含む計画情報とを取得する取得部と、
前記取得部が取得した前記解析モデル情報と前記計画情報とに基づいて、前記設置箇所が前記状態推定の精度に与える寄与度の標値を算出する算出部と、
前記算出部が算出した前記指標値を含む結果情報を出力する出力部と、
を備える、情報処理装置。 - 情報処理装置を、
構造物の状態推定を行う解析モデル情報と、前記構造物の状態に関する物理量を計測する計測器の設置箇所を含む計画情報とを取得する取得手段と、
前記取得手段が取得した前記解析モデル情報と前記計画情報とに基づいて、前記設置箇所が前記状態推定の精度に与える寄与度の指標値を算出する算出手段と、
前記算出手段が算出した前記指標値を含む結果情報を出力する出力手段と、
として機能させるためのプログラム。
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| EP24823260.5A EP4711970A1 (en) | 2023-06-12 | 2024-06-03 | Information processing method, information processing device, and program |
| KR1020267000757A KR20260022418A (ko) | 2023-06-12 | 2024-06-03 | 정보 처리 방법, 정보 처리 장치, 및 프로그램 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2015094587A (ja) * | 2013-11-08 | 2015-05-18 | セイコーエプソン株式会社 | 寿命予測方法、寿命予測装置、寿命予測システム、寿命演算装置及び回転機械 |
| JP2019144182A (ja) * | 2018-02-23 | 2019-08-29 | 株式会社日立製作所 | 水圧計配置支援システムおよび方法 |
| WO2020149044A1 (ja) * | 2019-01-16 | 2020-07-23 | 株式会社日立製作所 | パラメータ選定装置、パラメータ選定方法、およびパラメータ選定プログラム |
| WO2022107482A1 (ja) * | 2020-11-18 | 2022-05-27 | 三菱造船株式会社 | 推定装置、推定方法及びプログラム |
| WO2022145287A1 (ja) | 2020-12-28 | 2022-07-07 | 川崎重工業株式会社 | 舶用液化ガスタンクの状態推定システムおよび状態推定方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015094587A (ja) * | 2013-11-08 | 2015-05-18 | セイコーエプソン株式会社 | 寿命予測方法、寿命予測装置、寿命予測システム、寿命演算装置及び回転機械 |
| JP2019144182A (ja) * | 2018-02-23 | 2019-08-29 | 株式会社日立製作所 | 水圧計配置支援システムおよび方法 |
| WO2020149044A1 (ja) * | 2019-01-16 | 2020-07-23 | 株式会社日立製作所 | パラメータ選定装置、パラメータ選定方法、およびパラメータ選定プログラム |
| WO2022107482A1 (ja) * | 2020-11-18 | 2022-05-27 | 三菱造船株式会社 | 推定装置、推定方法及びプログラム |
| WO2022145287A1 (ja) | 2020-12-28 | 2022-07-07 | 川崎重工業株式会社 | 舶用液化ガスタンクの状態推定システムおよび状態推定方法 |
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| KR20260022418A (ko) | 2026-02-19 |
| EP4711970A1 (en) | 2026-03-18 |
| CN121285811A (zh) | 2026-01-06 |
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